This is a convenient dispenser that easily dispenses a precise 30ml amount. It is compatible with Japanese PET bottles (cocktail concentrate 1.8L, 2.7L, 4L, and 5L) with a bottle mouth diameter (outer diameter 36mm, inner diameter 28mm). Compatible with domestic 2.7L and 4L PET bottle diameters (outer diameter 36mm, inner diameter 29mm). Thank you for viewing. It has been washed and dried. This item has been used once, so please refrain from purchasing if you are concerned.